Shaft Replacement Guidelines - Goulds Pumps 3700 Installation, Operation And Maintenance Manual

• Radial heat flinger (123B)*
• Thrust fan (123E)*
• Bearing locknut (136)
• Impeller key (178) and coupling key
• Impeller screw (198)
• Impeller washer (199)
• Impeller lockwasher (199A)
• Impeller nut (304)
• Bearing lockwasher (382)
• Impeller spacer (443A)
• Water jacket cover (490)*
• All nuts, bolts, and screws
* If supplied.
Fastening
WARNING:
Risk of serious personal injury or property damage. Fasteners such as bolts and nuts are
critical to the safe and reliable operation of the product. Ensure appropriate use of fasteners
during installation or reassembly of the unit.
• Use fasteners of the proper size and material only.
• Replace all corroded fasteners.
• Ensure that all fasteners are properly tightened and that there are no missing fasteners.

Shaft replacement guidelines

Shaft measurement check
Check the bearing fits of the shaft. If any are outside the tolerances shown in the Bearing fits
and tolerances table, then replace the shaft.
Shaft inspection
Check the shaft straightness. Use "V" blocks or balance rollers to support the shaft on the
bearing fit areas. Replace the shaft if runout exceeds 0.03 mm | 0.001 in.
NOTICE: Do not use shaft centers for the runout check as they may have been damaged
during the removal of the bearings or impeller.
Shaft inspection
Check the shaft surface for damage, especially in areas indicated by the arrows in the following
figure. Replace the shaft if it is damaged beyond reasonable repair.
Figure 53: Shaft inspection
Model 3700, API Type OH2 / ISO 13709 1st and 2nd Ed. / API 610 8/9/10/11th Ed. Installation, Operation, and Maintenance
Manual
Maintenance
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